Sloan sits next to 4 phonetic neighbors — Sloane, Lane, and Stone are the closest matches by sound. Most share Sloan's Scottish cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"raider, warrior"
"friend of Yahweh"
"modern invented elaboration of Ezra"
"one who lives near a steep bank"
"eighth-born"
"Ruler of the army"
"castle, new home"
"God helps"
"battle"
"slender, narrow"
"meadow of the gods"
"little red-haired one"
"counsel, decision"
"calm, tranquility"
"white field, white acre"
"Broken land, marshy area"
"emperor, ruler (inspired by Kaiser/Caesar)"
"son of Ellis"
"wealthy and powerful"
"deer meadow"
Similar sound: These names share phonetic patterns with Sloan — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Scottish Gaelic origins, giving them the same cultural heritage as Sloan.
Rhythm: Sloan is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.